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Sigma To Cpk Conversion Table
| Sigma | Cpk | | 1.5 | 0.50 | | 3.00 | 1.00 | | 3.50 | 1.17 | | 4.00 | 1.33 | | 4.50 | 1.50 | | 5.00 | 1.67 | | 6.00 | 2.00 |
Assumptions
No analysis would be complete without properly noting the assumptions made. In the above table, we have assumed that the standard sigma shift of 1.5 is appropriate (the calculator allows you to specify another value), the data is normally distributed, and the process is stable. In addition, the calculations are made with using one-tail values of the normal distribution. Related > How to Calculate Process Sigma
Related > Sigma to DPMO to Yield to Cpk Table
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